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  • 卧式轴流泵的保养方法?
  • 本站编辑:杭州新龙发布日期:2022-04-25 16:15 浏览次数:
卧式轴流泵按泵轴的方向不同,可分为立式、卧式、斜式;按其叶片是否可调和调节机构的不同,又可分为固定式、半调节式和全调节式。中、小型轴流泵常用立式、半调节式。
卧式轴流泵启动时要关闭出口阀门,因为此时功率小,阀门开启的话,容易烧电机相反,轴流泵启动时要开启出口阀门,因为此时功率小,阀门关闭的话,容易烧电机。
卧式轴流泵电气方面的维护与保养,要经常检查轴流泵的运行电压与电流。用电压表测量三相电压应基本一致,且在340~420V,用钳形电流表测量三相电流应基本一致,且为0.5~l倍的额定电流。
定期检查轴流泵对地的热态绝缘电阻。在正常连续运行4—6h后,停机用兆欧表测量电动机绕组对地绝缘电阻应大于0.5MΩ。对于长时间停用的轴流泵,使用前也应作同样的检查。
开机前要检查热继电器的灵敏度与其他保护装置的工作是否正常。检查电缆有无破损现象。对于油浸式轴流泵,要注意轴流泵渗油对电缆缘橡胶的破坏作用。
According to the different direction of pump shaft, horizontal axial flow pump can be divided into vertical type, horizontal type and inclined type; According to whether the blade is adjustable or not, the regulating mechanism can be divided into fixed type, semi regulating type and full regulating type. Medium and small axial flow pumps are usually vertical and semi regulating.
When starting the horizontal axial flow pump, close the outlet valve, because the power is small at this time. If the valve is opened, it is easy to burn the motor. On the contrary, when starting the axial flow pump, open the outlet valve, because the power is small at this time and if the valve is closed, it is easy to burn the motor.
For the electrical maintenance of horizontal axial flow pump, the operating voltage and current of axial flow pump shall be checked frequently. The three-phase voltage measured by Voltmeter shall be basically consistent and at 340 ~ 420v. The three-phase current measured by clamp ammeter shall be basically consistent and 0.5 ~ 1 times the rated current.
Check the thermal insulation resistance of axial flow pump to ground regularly. After normal continuous operation for 4-6h, stop the machine and measure the insulation resistance of motor winding to ground with a megger, which shall be greater than 0.5m Ω. For axial flow pumps that have been out of service for a long time, the same inspection shall be carried out before use.
Before starting the machine, check the sensitivity of thermal relay and whether other protective devices work normally. Check the cable for damage. For oil immersed axial flow pump, pay attention to the damage of oil leakage of axial flow pump to cable insulation rubber.
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